Katrin Weir
Katrin Weir is a Forensic Psychologist in Indian Orchard, MA, registered under NPI 1154451177. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 529 MAIN ST SUITE #1, Indian Orchard, MA 01151. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 6803 | MA | Forensic Psychologist primary |
This provider holds licence 6803 issued in MA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Clinical Psychologist
- PAC ID
- 3476969106
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Connecticut | I20210304000830 | Practitioner - Clinical Psychologist |
| Massachusetts | I20210330000591 | Practitioner - Clinical Psychologist |
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Psychologist. There are 2 separate enrolment records across 2 states (CT, MA). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Forensic covers
A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems. NUCC Health Care Provider Taxonomy, code 103TF0200X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1154451177 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 7, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
529 MAIN ST SUITE #1 Indian Orchard, MA 01151 (413) 543-5865 Fax (413) 543-2202 |
| Mailing address |
4 HITCHING POST LN Wilbraham, MA 01095 |
| Other names |
Katrin Rouse Weir Doing Business As |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 1 | 5 | 4 | 4 | 5 | 1 | 1 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 1 | 4 | 8 | 5 | 2 | 1 | 5 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.